13216991111 has 2 divisors, whose sum is σ = 13216991112. Its totient is φ = 13216991110.

The previous prime is 13216991089. The next prime is 13216991201. The reversal of 13216991111 is 11119961231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13216991111 - 2²⁶ = 13149882247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13216997111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6608495555 + 6608495556.

It is an arithmetic number, because the mean of its divisors is an integer number (6608495556).

Almost surely, 2^13216991111 is an apocalyptic number.

13216991111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13216991111 is an equidigital number, since it uses as much as digits as its factorization.

13216991111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 35.

The spelling of 13216991111 in words is "thirteen billion, two hundred sixteen million, nine hundred ninety-one thousand, one hundred eleven".